{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T21:32:35Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 2,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T23:50:00Z",
      "ingestedAt": "2026-10-05T20:47:50+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:32+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q7561",
    "registryId": "vr.tr.snow",
    "name": "snow",
    "version": "0.2.0-wave.2",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q7561/",
  "model": {
    "registry_id": "vr.tr.snow",
    "name": "snow",
    "purpose": "Let an agent explain snow formation and types, give snow safety and travel guidance, support winter recreation, and describe snow in climate, hydrology and culture.",
    "definition": "Precipitation of ice crystals that form in clouds and fall as flakes, and the material that accumulates on the ground in forms from powder and packing snow to slush, crust and firn, with regional names and formations such as yukigata patterns and rime-covered ice monsters; snow shapes climate, water supply, transport, recreation and hazards such as avalanches.",
    "what_it_is_for": "Frozen precipitation and its accumulation.",
    "affordances": [
      "explain snow formation and types",
      "give safety and travel guidance",
      "support winter recreation",
      "describe snow in climate and water supply"
    ],
    "distinguishing_features": [
      "Ice crystal precipitation",
      "Snowpack forms",
      "Seasonal and regional",
      "Hazard and resource"
    ],
    "appearance": "White crystalline flakes and a white ground cover.",
    "visual_identification": [
      "Ice crystals from clouds",
      "Accumulates as snowpack",
      "Hail is layered ice; sleet is partly melted"
    ],
    "physical_properties": [
      {
        "quantity": "Bulk density",
        "unit": "kg/m3",
        "typical_range": "",
        "note": "Density is measured as sample mass divided by bulk volume and varies strongly with compaction and liquid water content."
      },
      {
        "quantity": "Snow depth",
        "unit": "cm",
        "typical_range": "",
        "note": "Depth is measured vertically from the underlying surface to the top of the snow cover."
      },
      {
        "quantity": "Snow water equivalent",
        "unit": "mm",
        "typical_range": "",
        "note": "Water equivalent is the depth of liquid water represented by the snow mass over a given area."
      },
      {
        "quantity": "Grain size",
        "unit": "mm",
        "typical_range": "",
        "note": "Grain dimensions are measured using magnified observation with a calibrated scale."
      }
    ],
    "families_and_kinds": [
      "snowfall types such as powder and wet snow",
      "ground snow such as packing snow, slush and crust",
      "snow crystals and diamond dust",
      "snow formations such as yukigata and rime monsters",
      "artificial snow"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "precipitation",
        "why": "category"
      },
      {
        "relation": "is a kind of",
        "target": "material",
        "why": "category"
      },
      {
        "relation": "is related to",
        "target": "ice",
        "why": "frozen water"
      },
      {
        "relation": "is related to",
        "target": "avalanche",
        "why": "hazard"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "Meteorological observation standards",
      "Winter road and avalanche safety rules",
      "Building snow load codes"
    ],
    "failure_modes_and_hazards": [
      "Avalanches",
      "Road and roof collapse hazards",
      "Hypothermia and frostbite"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Report snowfall, snow depth and avalanche danger from meteorological and avalanche services.",
        "Clear snow from routes and roofs it is authorized to maintain, following safety rules."
      ],
      "must_not": [
        "Direct people into avalanche terrain against current warnings.",
        "Leave snow loads on roofs or overhangs that are known to exceed safe limits.",
        "Dump cleared snow where it blocks exits, hydrants or emergency routes.",
        "Present road or slope conditions as safe without current data."
      ],
      "requires_human": [
        "Closing roads, slopes or buildings because of snow.",
        "Sending people to rescue others in avalanche terrain."
      ]
    },
    "ethics": {
      "considerations": [
        "Snow kills through avalanches, cold and collapses, mostly among people who underestimate it.",
        "Declining snow cover threatens water supplies and mountain livelihoods."
      ],
      "affected_parties": [
        "Travellers and winter sports users",
        "People without shelter",
        "Mountain communities"
      ]
    },
    "owners": {
      "steward": "Nobody owns falling snow; owners answer for snow on their property and authorities for public routes.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q7561: snow",
      "url": "https://www.wikidata.org/wiki/Q7561",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Snow",
      "url": "https://en.wikipedia.org/wiki/Snow",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "safety",
        "name": "Safety",
        "description": "Snow hazards.",
        "rationale": "Protection.",
        "layers": [
          {
            "id": "travel",
            "name": "Travel",
            "description": "Winter travel.",
            "findings": [
              {
                "id": "travel-finding",
                "name": "Travel",
                "description": "Travel.",
                "questions": [
                  {
                    "text": "What do authorities advise for driving and travelling in snow here, and are warnings in force?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is someone stranded or in danger now?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "avalanche",
            "name": "Avalanche",
            "description": "Avalanche and roof loads.",
            "findings": [
              {
                "id": "avalanche-finding",
                "name": "Avalanche",
                "description": "Avalanche.",
                "questions": [
                  {
                    "text": "What is the current avalanche danger, according to the regional service, and what do snow load rules require for roofs?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which precautions apply in backcountry travel?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "science",
        "name": "Science",
        "description": "How snow forms.",
        "rationale": "Physics.",
        "layers": [
          {
            "id": "formation",
            "name": "Formation",
            "description": "Snow crystals.",
            "findings": [
              {
                "id": "formation-finding",
                "name": "Formation",
                "description": "Formation.",
                "questions": [
                  {
                    "text": "How do snow crystals form, and why do they take so many shapes?",
                    "kind": "definition"
                  },
                  {
                    "text": "What determines whether precipitation falls as snow?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "types",
            "name": "Types",
            "description": "Snow types.",
            "findings": [
              {
                "id": "types-finding",
                "name": "Types",
                "description": "Types.",
                "questions": [
                  {
                    "text": "What are powder, packing snow, slush, crust and firn, and how does snowpack change over time?",
                    "kind": "definition"
                  },
                  {
                    "text": "What are yukigata and rime-covered ice monsters?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "use",
        "name": "Use",
        "description": "Recreation and life.",
        "rationale": "Practical.",
        "layers": [
          {
            "id": "recreation",
            "name": "Recreation",
            "description": "Winter sports.",
            "findings": [
              {
                "id": "recreation-finding",
                "name": "Recreation",
                "description": "Recreation.",
                "questions": [
                  {
                    "text": "What snow conditions suit skiing, snowboarding and other activities, and how is artificial snow made?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which safety rules apply?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "manage",
            "name": "Manage",
            "description": "Snow removal.",
            "findings": [
              {
                "id": "manage-finding",
                "name": "Manage",
                "description": "Snow removal.",
                "questions": [
                  {
                    "text": "How is snow cleared from roads, roofs and paths safely?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Who is responsible here?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "environment",
        "name": "Environment",
        "description": "Climate and culture.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "water",
            "name": "Water",
            "description": "Snow and water.",
            "findings": [
              {
                "id": "water-finding",
                "name": "Water",
                "description": "Water.",
                "questions": [
                  {
                    "text": "How does snowpack supply water, and how is it changing with climate, according to research?",
                    "kind": "provenance"
                  },
                  {
                    "text": "How is snow measured?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "culture",
            "name": "Culture",
            "description": "Snow in culture.",
            "findings": [
              {
                "id": "culture-finding",
                "name": "Culture",
                "description": "Culture.",
                "questions": [
                  {
                    "text": "What names and meanings do different languages and cultures give to snow?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which snow festivals and traditions exist?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should snow types be separate entries?",
    "How should forecasts be linked?",
    "How should avalanche services be localised?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}